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      1 /*
      2  * xcam_common.cpp - xcam common
      3  *
      4  *  Copyright (c) 2014-2015 Intel Corporation
      5  *
      6  * Licensed under the Apache License, Version 2.0 (the "License");
      7  * you may not use this file except in compliance with the License.
      8  * You may obtain a copy of the License at
      9  *
     10  *      http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  * Unless required by applicable law or agreed to in writing, software
     13  * distributed under the License is distributed on an "AS IS" BASIS,
     14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  * See the License for the specific language governing permissions and
     16  * limitations under the License.
     17  *
     18  * Author: Wind Yuan <feng.yuan (at) intel.com>
     19  */
     20 
     21 #ifdef HAVE_CONFIG_H
     22 #include "config.h"
     23 #endif
     24 
     25 #include <base/xcam_common.h>
     26 #include <fcntl.h>
     27 #include <errno.h>
     28 #include <sys/ioctl.h>
     29 #include <stdarg.h>
     30 
     31 static char log_file_name[XCAM_MAX_STR_SIZE] = {0};
     32 
     33 uint32_t xcam_version ()
     34 {
     35     return XCAM_VERSION;
     36 }
     37 
     38 void * xcam_malloc(size_t size)
     39 {
     40     return malloc (size);
     41 }
     42 
     43 void * xcam_malloc0(size_t size)
     44 {
     45     void * ptr = malloc (size);
     46     memset (ptr, 0, size);
     47     return ptr;
     48 }
     49 
     50 void xcam_free(void *ptr)
     51 {
     52     if (ptr)
     53         free (ptr);
     54 }
     55 
     56 int xcam_device_ioctl (int fd, int cmd, void *arg)
     57 {
     58     int ret = 0;
     59     int tried_time = 0;
     60 
     61     if (fd < 0)
     62         return -1;
     63 
     64     while (1) {
     65         ret = ioctl (fd, cmd, arg);
     66         if (ret >= 0)
     67             break;
     68         if (errno != EINTR && errno != EAGAIN)
     69             break;
     70         if (++tried_time > 5)
     71             break;
     72     }
     73 
     74     if (ret >= 0) {
     75         XCAM_LOG_DEBUG ("ioctl return ok on fd(%d), cmd:%d", fd, cmd);
     76     } else {
     77         XCAM_LOG_DEBUG ("ioctl failed on fd(%d), cmd:%d, error:%s",
     78                         fd, cmd, strerror(errno));
     79     }
     80     return ret;
     81 }
     82 
     83 const char *
     84 xcam_fourcc_to_string (uint32_t fourcc)
     85 {
     86     static char str[5];
     87 
     88     xcam_mem_clear (str);
     89     memcpy (str, &fourcc, 4);
     90     return str;
     91 }
     92 
     93 void xcam_print_log (const char* format, ...) {
     94     char buffer[XCAM_MAX_STR_SIZE] = {0};
     95 
     96     va_list va_list;
     97     va_start (va_list, format);
     98     vsnprintf (buffer, XCAM_MAX_STR_SIZE, format, va_list);
     99     va_end (va_list);
    100 
    101     if (strlen (log_file_name) > 0) {
    102         FILE* p_file = fopen (log_file_name, "ab+");
    103         if (NULL != p_file) {
    104             fwrite (buffer, sizeof (buffer[0]), strlen (buffer), p_file);
    105             fclose (p_file);
    106         } else {
    107             printf ("%s", buffer);
    108         }
    109     } else {
    110         printf ("%s", buffer);
    111     }
    112 }
    113 
    114 void xcam_set_log (const char* file_name) {
    115     if (NULL != file_name) {
    116         memset (log_file_name, 0, XCAM_MAX_STR_SIZE);
    117         strncpy (log_file_name, file_name, XCAM_MAX_STR_SIZE);
    118     }
    119 }
    120 
    121